Sun visor



FIG. 1 is a perspective view from the top, front, and right side of a sun visor showing my new design;

FIG. 2 is a left side view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a bottom view thereof; and,

FIG. 6 is a rear elevational view therof.

The broken line showing of the human form in FIG. 1 is for illustrative purposes only and forms no part of the claimed design. 

I claim the ornamental design for a sun visor, as shown and described. 